<template>
  <div class="upload-container">
    <el-button :style="{ background: color, borderColor: color }" icon="el-icon-upload" size="mini" type="primary"
      @click="dialogVisible = true">
      <!-- upload -->
      上传图片
    </el-button>
    <el-dialog :visible.sync="dialogVisible">
      <el-upload :multiple="true" :limit="8" :file-list="fileList" :show-file-list="true" :on-remove="handleRemove"
        :on-success="handleSuccess" :before-upload="beforeUpload" :on-exceed="handleExceed" class="editor-slide-upload"
        action="https://httpbin.org/post" list-type="picture-card">
        <el-button size="small" type="primary">
          <!-- Click upload -->
          点击上传
        </el-button>
      </el-upload>
      <el-button @click="dialogVisible = false">
        <!-- Cancel -->
        取消
      </el-button>
      <el-button type="primary" @click="handleSubmit">
        <!-- Confirm -->
        确定
      </el-button>
    </el-dialog>
  </div>
</template>

<script>
// import { getToken } from 'api/qiniu'
// import uploadUrl from "@/commonJs/upload.js";

export default {
  name: "EditorSlideUpload",
  props: {
    color: {
      type: String,
      default: "#1890ff",
    },
  },

  data() {
    return {
      dialogVisible: false,
      listObj: {},
      fileList: [],
    };
  },
  methods: {
    checkAllSuccess() {
      return Object.keys(this.listObj).every(
        (item) => this.listObj[item].hasSuccess
      );
    },
    handleSubmit() {
      const arr = Object.keys(this.listObj).map((v) => this.listObj[v]);
      if (!this.checkAllSuccess()) {
        // this.$message('Please wait for all images to be uploaded successfully. If there is a network problem, please refresh the page and upload again!')
        this.$message(
          "请等待所有图片上传成功。如果出现网络问题，请刷新页面并重新上传！"
        );
        return;
      }
      this.$emit("successCBK", arr);
      this.listObj = {};
      this.fileList = [];
      this.dialogVisible = false;
    },
    handleSuccess(response, file) {
      const uid = file.uid;
      const objKeyArr = Object.keys(this.listObj);
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          this.listObj[objKeyArr[i]].url = response.files.file;
          this.listObj[objKeyArr[i]].hasSuccess = true;
          return;
        }
      }
    },
    handleRemove(file) {
      const uid = file.uid;
      const objKeyArr = Object.keys(this.listObj);
      for (let i = 0, len = objKeyArr.length; i < len; i++) {
        if (this.listObj[objKeyArr[i]].uid === uid) {
          delete this.listObj[objKeyArr[i]];
          return;
        }
      }
    },
    handleExceed(files, fileList) {
      this.$message.warning(
        `当前限制选择 8 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length
        } 个文件`
      );
    },
    beforeUpload(file) {
      const _self = this;
      const _URL = window.URL || window.webkitURL;
      const fileName = file.uid;
      this.listObj[fileName] = {};
      return new Promise((resolve, reject) => {
        const img = new Image();
        img.src = _URL.createObjectURL(file);
        img.onload = function () {
          _self.listObj[fileName] = {
            hasSuccess: false,
            name: file.name,
            uid: file.uid,
            width: this.width,
            height: this.height,
          };
        };
        resolve(true);
      });
    },
  },
};
</script>

<style lang="scss" scoped>
.editor-slide-upload {
  margin-bottom: 20px;

  ::v-deep .el-upload--picture-card {
    width: 100%;
  }
}
</style>
